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Gurnee, IL
Full City Profile · Illinois · Lake County County
4.0
/5.0
A
Great
30,486
Population
2,257/sq mi density
$121,410
Median Income
$57,800 per capita
$331,100
Home Value
$364,252 Zillow
$1,594
Median Rent
29.4% income on rent
48°F
Avg Temperature
261 sunny days/yr
131
Violent Crime/100K
3,260 property/100K
A
Overall
4.0 / 5.0
Strong
A+
Economy
4.9 / 5.0
$121,410 median income, 2.6% unemployment
A+
Affordability
5.0 / 5.0
$331,100 home value, $1,594/mo rent
F
Safety
1.0 / 5.0
131 violent crimes/100K
A+
Education
5.0 / 5.0
54.4% bachelor's degree or higher
Gurnee experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 23°F in January while summers reach 72°F in July. The area gets 261 sunny days per year. Air quality is rated Good with a median AQI of 43.
Temperature
23°F Jan (-5°C)
72°F Jul (22°C)
| Annual Average | 48.4°F |
| 10% below US avg | |
| January Average | 23°F (-5°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 261 days/yr |
Geography
| Elevation | 705 ft (215 m) |
| Area | 13.5 sq mi (35.0 km²) |
| Population Density | 2,257/sq mi |
| Coordinates | 42.3701°N, 87.9368°W |
| Timezone | America/Chicago |
| County | Lake County County |
| Nearest Airport | Kenosha Regional (ENW) 16 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0480 ppm |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 96.0 / 100 |
| Social Vulnerability | 14.1 / 100 |
| Community Resilience | 78.1 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Very High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Very High |
| Landslide | Very Low |
| Coastal Flood | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 115 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 23°F (-5°C) | 1.7 in | Coldest |
| February | 25°F (-4°C) | 1.3 in | Driest |
| March | 35°F (2°C) | 2.5 in | |
| April | 46°F (8°C) | 3.6 in | |
| May | 56°F (14°C) | 3.3 in | |
| June | 66°F (19°C) | 3.7 in | |
| July | 72°F (22°C) | 3.8 in | Warmest |
| August | 70°F (21°C) | 4.0 in | Wettest |
| September | 62°F (17°C) | 3.7 in | |
| October | 51°F (11°C) | 2.4 in | |
| November | 38°F (4°C) | 2.5 in | |
| December | 26°F (-3°C) | 2.2 in |
Gurnee has a seasonal temperature swing of 50°F / from 23°F in January to 72°F in July. Total annual precipitation is 34.7 inches, with August being the wettest month (4.0") and February the driest (1.3").